Robust localization and identification of African clawed frogs in digital images

Yükleniyor...
Küçük Resim

Tarih

2014-09

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Elsevier Science BV

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Araştırma projeleri

Organizasyon Birimleri

Dergi sayısı

Özet

We study the automatic localization and identification of African clawed frogs (Xenopus laevis sp.) in digital images taken in a laboratory environment. We propose a novel and stable frog body localization and skin pattern window extraction algorithm. We show that it compensates scale and rotation changes very well. Moreover, it is able to localize and extract highly overlapping regions (pattern windows) even in the cases of intense affine transformations, blurring, Gaussian noise, and intensity transformations. The frog skin pattern (i.e. texture) provides a unique feature for the identification of individual frogs. We investigate the suitability of five different feature descriptors (Gabor filters, area granulometry, HoG,(1) dense SIFT,(2) and raw pixel values) to represent frog skin patterns. We compare the robustness of the features based on their identification performance using a nearest neighbor classifier. Our experiments show that among five features that we tested, the best performing feature against rotation, scale, and blurring modifications was the raw pixel feature, whereas the SIFT feature was the best performing one against affine and intensity modifications.

Açıklama

Anahtar Kelimeler

Xenopus laevis, Automated frog identification, Skin pattern recognition, Area granulometry, Sift, HoG, Texture analysis, Classification, Similarity, Retrieval, Features

Kaynak

Ecological Informatics

WoS Q Değeri

Q1

Scopus Q Değeri

Q1

Cilt

23

Sayı

SI

Künye

Tek, F. B., Cannavo, F., Nunnari, G. & Kale, İ. (2014). Robust localization and identification of african clawed frogs in digital images. Ecological Informatics, 23, 3-12. doi:10.1016/j.ecoinf.2013.09.005